Fly Fishing Techniques

If you were out on a resevoir fishing one day with your family. One side of the reservoir is privite land owned by family members and people you know. The other side of the lake is owned buy the county water authority. You have your back to the bank of the side owned by the county and you hear a sound. The sound is like something flying past your head and then something hitting the water. There is not really a spash to see in the water cause what ever it was was small. You look to the bank but see nothing, you are not the only one in the boat to hear it. You move up the lake and everything in fine. On the way back you pass the same area. This time from the woods you just hear a click. I was not the only one in the boat to hear it. You move along swiftly without another sound. It is like someone is in the woods next to the lake. Must be in camo and don’t move. I do not have a gun or anything with me so I have no way to fire back. If this is a family and favorite spot do you go back?